Float-operated circuit closer



June 14, li927.

M ROSALES lFLOAT OPERATED CIRCUIT v CLOSER Filed June` 22'. 1925 2 Sheets-Sheet 1 ATTORNEY Jun 14, 1927.

M. ROSALES FLoAT OPERATED CIRCUIT CLOSER 2 Sheets-Sheet 2 Filed June 22,v 1925 INVENTOR Xgmmnfmuh/h/ ATTORNEY Patented Janev 14, 1927.

UNITED STATELS MARIANO ROSALES, GF

FLOAT-OPERTED Application filed aune 22,

This invention relates to iniprovenients in indicators, particularly oil indicators l'or automobiles or the like and it is the principal object to provide an electrical oil indicator which is lioat controlled.

Another object of the invent-ion is the provision of an electrical oil indicator in which a lioat operates to close an alarm circuit to indicate that the supply ot oil must be replenished.

A further object of the invention is the provision of an electrical oil indicator ot simple and inexpensive construction, yet ettectively operating to positively indicate the need of supplying oil to the parts to be lubricated or to replenish the oil supply lor instance in the engine crank case.

These and other objects and advantages of the invention will become more fully apparent as the. description thereoiu proceeds, and will then be specifically defined in the appended claims.

i In the accompanying drawing, forming a material part of this disclosure:

Fig. l is a perspective view ot an apparatus or electrical oil indicator constructed according to the present invention.

Fig. 2 is a longitudinal section through the same.

Fig. 3 is a top plan view of the apparatus.

Fig. 4 is a section on line 4 4 of Figure 3.

Fig. 5 is a longitudinal section on line 5 5 of Figure 2.

Fig. 6 is a bottom plan view ot the top part of the apparatus seen in the direction of the arrows 6-G, Figure 5.

Fig. 7 is a top plan view seen in the direction of the arrows 7 7, Figure 5.

Fig. 8 is a diagrammatical View showing the electrical connections.

The apparatus comprises a casing or housing l() having a lateral extension ll, both closed at the top by means oit a plate l2 having an opening 13 therein. At the bottom or near to the same, the oil inlet l-lis provided adapted to be closed by a screw plug or the like.

A plurality of vertically disposed rods l5 are interposed between bottom and top ot the casing and act as guides Ytor the lioat 16 to the top part of which a soclet 17 is attached adapted to receive hold the lower end of a float operated bar 18 consisting of two parts connected intermediate their ends by a joint 19 allowing a bending of the bar at this point in the manner oit 1,632,098 Parent caries.

SAN ANTONI@ TEXAS.

CELGUT CLOSER.

1925. Serial No. 38,617.

a lince. lilear its upper end a similar joint 2O allows the attachment ot an operating` rod 2l to bar flS adapted to pass through the opening` 13 into a casing 22 secured to the top of casing l0 having an air vent 23 in one ot its side walls.

rlhe top plate ot casing 22 is madeA ot fibrous material, and carries ilfour contact screws or binding posts 25, 26, 27 and 28, two of which are connected by means ot' the wires 29, 8O to contacts 36 and 37 supported by a libre block 35 slidable between rails 3l, 32, and adjustable therealong by means of adjusting screw bolts and 34. fl contact 38 is connected to a spring 38 having electrical connections with contact 36, and another contact 39 is engageable with contact 3S, said contact 3.9 being electrically connected with contact 37. rlhe other two ot the contacts 27, 28 are connected by wires to contacts 36 and 37 supported by a libre block 35 slidable between rails 3l, 32, and adjustable therealong by means et adjusting screw bolts 47 and 48. fr contact 45 is connected to a spring 44 having electrical connections with contact 37, and another contact 45 is engageable with contact 45, said contact 45 being electrically connected with contact 36. Binding post 25 is grounded, shown in Fig. 8, while post 26 is in circuit with a bell 40, battery 40h, and ground 4l. Posts 27 and 28 are in circuit with the electrical sparking system of the automobile, connected thereto by wires 42 and 43.

The operation ot the device will be evident from the above description without further detailed explanation.

lt the supply of oil within the container' l0 has fallen below a predetermined level, determined by the respective adjustment ot the screws 33, 34, the float actuated rod 2l will close the bell circuit by abutting against spring 38, and the bell will give an acoustic alarm signal. Yll the oil supply is not replenished, the rod 2l will continue to move as the float descends due to the diminishing supply of oil, and will linally also reach spring 44, abutting thereagainst, thereupon opening Ithe contacts 45, 45, and breaking the ignition circuit, causing the engine to stop. The position ol' spring 44 is adjusted by the screws 47,

vllhile l have shown and described the preferred t'orm oi my apparatus as an example ot the many ways of practically cou- CFI structing the same, it is to be understood, that such changes ma'y be mede in the general arrangement and in 1the construction ot the minor details thereof, as fall Within the scope of the appended claims, without departure from the principle involved.

Having thus descrioed my invention, what I claim es new and desire to secure by lietters Patent is:

l. In a. device of the class described, having :1 pivoted rod movable by e float, the combination of u casing, rails depending :trom said casing, blocks slidable between said rails, adjusting screws engaging seid casing, and abutting said blocks, springs depending, from seid blocks and projecting into the line of movement ot said rod, contects on seid springs, other contacts engageeble with seid contacts, und ilepending from said blocks, some ot' the latter contacts being located in the front et sind springs, and other of ,the latter contacts being located iin the rear ot seid springs, whereby e forward movement otl said rod closes n pair of seid coactiva contacts, and e continued forward movement opens another pair of seid couctive contacts.

' 2. In :L device olt the class described, an oil operated float switch, comprising n float, lever arms Vconnected to seid Hout, u pivoted `rod moved by said lever arrns, a casing into which seid pivoted rod projects, mils depending from seid casing, blocks slidable between seid rails, adjusting screws engaginel seid casing, und abutting seid blocks, spril'igs depending 'from seid blocks :ind projecting into the line of movement offsaid rod, contacts on4 seid springs, other contacts cngagezible with said contacts, and depending from said blocks, 'whereby ay l'ol'wzlrd movem'el'it of .seid rod closes u pei r ol' said coactive contacts, and u continued forward movement opens :mother pair ol" said coucvtive contacts.

In testimony whereof l have efi'ixed my s-tiglmftllre.

MARI AN() ROS ALES. 

